US 12,252,604 B2
Foamed polypropylene composition suitable for sheets and articles
Daniel Van Houcke, Abu Dhabi (AE); and Emelito Tenorio, Abu Dhabi (AE)
Assigned to ABU DHABI POLYMERS CO. LTD. (BOROUGE) L.L.C., Abu Dhabi (AE); and Borealis AG, Vienna (AT)
Appl. No. 17/785,271
Filed by ABU DHABI POLYMERS CO. LTD. (BOROUGE) L.L.C., Abu Dhabi (AE); and Borealis AG, Vienna (AT)
PCT Filed Dec. 16, 2020, PCT No. PCT/EP2020/086475
§ 371(c)(1), (2) Date Jun. 14, 2022,
PCT Pub. No. WO2021/122783, PCT Pub. Date Jun. 24, 2021.
Claims priority of application No. 19216557 (EP), filed on Dec. 16, 2019.
Prior Publication US 2023/0024936 A1, Jan. 26, 2023
Int. Cl. C08L 23/12 (2006.01); B32B 5/18 (2006.01); B32B 5/32 (2006.01); B32B 27/06 (2006.01); B32B 27/32 (2006.01); C08J 9/00 (2006.01)
CPC C08L 23/12 (2013.01) [B32B 5/18 (2013.01); B32B 27/065 (2013.01); B32B 27/32 (2013.01); C08J 9/0061 (2013.01); B32B 5/32 (2013.01); B32B 2250/40 (2013.01); B32B 2266/025 (2013.01); B32B 2307/72 (2013.01); B32B 2307/732 (2013.01); B32B 2439/02 (2013.01); B32B 2439/60 (2013.01); B32B 2439/66 (2013.01); C08J 2323/12 (2013.01); C08J 2423/06 (2013.01); C08L 2203/14 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A foamed polypropylene composition comprising:
(A) from 60.0 to 95.0 wt % of a linear propylene homopolymer and
(B) from 5.0 to 40.0 wt % of a low density polyethylene,
based on the total weight of the polypropylene composition,
wherein the polypropylene composition before foaming has a melt flow rate MFR2 of from 0.1 to 5.0 g/10 min, determined according to ISO 1133 at a load of 2.16 kg and a temperature of 230° C., and a F30 melt strength of from 0.1 to 2.0 cN, determined according to ISO 16790:2005.